ĭn-effābĭlis, e, adj.,
unutterable , unpronounceable (Plinian): nomina, Plin. 5 praef. § 1: verba, id. 28, 2, 4, § 20.— Adv.: ĭneffābĭlĭter , unutterably , ineffably (late Lat.): Deus ineffabiliter artifex, Aug. Enchir. 89.